Tubeless first timer help...

Hullo...

I have some new wheels, kinlin xr-31T rims, set up for tubeless by SPA who built them. I have some WTB Venture 40C tubeless tyres.

I followed the methodology of putting on the tyres, inflating fast with a hand pump, when I heard the characteristic popping I knew the tyre had seated (soapy water helped with this) then I removed the valve core and let the air out, added the sealant through the valve and reinflated to 50psi ISH, and sloshed it around. I left them on their side overnight.

The next day they had gone down and were almost flat...

Any ideas why?

The rubber bushing used on the outside of the rim to seal the valve in is not the right profile for the deepish V of the rims and so it sort of bulges out (nice one SPA). It looks shit but I didn't think it mattered as the valve seems to be airtight.

More soapy water reveals various seeping air all around the rim/tyre join... Something I'm missing?

Thanks
Nick

Read the first post on the tubeless thread.

Not really that helpful tbh. Did all that didn't I

Top up the sealant, pump themgo for a twenty minute spin, then leave them. You probably just need to distribute more sealant around the walls and riding is the easiest way

The best way to dread the sealant around after inflating to pressure is to ride them.

Sloshing around, even spinning by hand will not be sufficient

Thanks for the tip. That will have to wait until the bike is built then!

As Furious says just go for a ride and take pump with you!

Alternatively bounce the wheels around and give them a good shake.